Sec. 3--Fig. 6COMBINATION FOUR WHEEL, TRACTOR AND TWO WHEEL TRACTOR DRAWN SCRAPER (WITHPNEUMATICTIRES), LENGTHWISE-FLAT CARSItemNo. of Pcs.DescriptionABrake wheel clearance. See Fig. 2.B32Blocks, pattern 2. Locate two in front and back of each front wheel of tractor, three in front andback of each rear wheel of tractor and three in front and back of each scraper wheel. Naileach to floor with two 60-D, three 40-D and one 20-D nail in heel and one 40-D nail in eachside of block.C6Blocks, pattern 3. Locate one against the outside of each front wheel of tractor, against inside ofeach rear wheel of tractor and against inside of each wheel of scraper. Nail each to floor withtwo 60-D, three 40-D and one 20-D nail in heel and one 40-D nail in each side of block.D22 in. x 6 in. x 24 in. Locate one under each side of blade of scraper to prevent contact withfloor of car.EAs required. 3 1/2 in. x 4 in. x 23 1/2 in. Locate in stake pocket on each side about at center of scraper.Drive a 40-D nail into stake directly below and with head even with outside of stake pocket, orinto stake through hole in center of stake pocket.FAs required. Blocks, pattern 4. Locate in stake pockets on each side of Items "E" and drive down so as toretain Items "E" in place. Nail each to Item "E" with one 10-D nail.If so equipped, hand brakes must be tightly set and levers wired.See General Rules 4, 5, 7, 9, 10, 14, 19-A, 19-B and Fig. 1-B for further details.F-8